Application of power extraction method in starting process simulation and control law design of turbojet engines

In accordance with the character of the turbojet's starting control law,the power extraction model of acceleration and deceleration control law was used to design the starting control law of turbojet engine.In combination with the low speed component character prediction method and the improved power extraction method,the constrain conditions and design procedures were presented.The model could be used to predict the starter power in the crank process,and design the starting control law in the whole flight envelope and all climate conditions.It is shown that the control law designed with the power extraction method coincides with the actual starting control law of the turbojet engine,and the model is of good engineering value.